Question

The adsorbed gas can be recovered by
(a) raising the temperature and pressure,
(b) lowering the temperature and pressure,
(c) lowering the temperature and raising the pressure,
(d) raising the temperature and lowering the pressure.​

Answer 1

Answer:

{OPTION A} RISING THE TEMPERATURE AND PRESSURE

Answer 2

OPTION (d) IS CORRECT.

(d) RAISING THE TEMPERATURE AND LOWERING OF PRESSURE.

Explanation:

• The adsorption is a phenomenon by which a gas binds to the surface of the substance.
• It is a surface phenomenon as the particles are adsorbing on the surface.
• The le'chatelier's principle explains the effect of temperature and pressure on adsorption of gas.
• When the temperature, increases the adsorbed gas gets removed from the surface as it is an exothermic process.
• When pressure increases the adsorption also increases, as during adsorption the pressure decreases. So, to recover the gas we should decrease the pressure.
• Therefore option (d) raising the temperature and lowering the pressure is correct.